#include<stdio.h>
#include<stdlib.h>
int main()
{
	char c;
	c=getchar();
	while (c!= '\n')
	{
	
		c=c+2;
		if(c>'z')
			c=c-26;
		
		putchar(c);
		c=getchar();
	}

	return 0;
}
